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/* $OpenBSD: kernel.h,v 1.12 2001/01/28 22:45:11 niklas Exp $ */
/*
* Copyright 1997-2000 Niels Provos <provos@citi.umich.edu>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Niels Provos.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* kernel.h:
* security paramter index creation.
*/
#ifndef _KERNEL_H_
#define _KERNEL_H_
#undef EXTERN
#ifdef _KERNEL_C_
#define EXTERN
#define ESP_OLD 0x01
#define ESP_NEW 0x02
#define AH_OLD 0x04
#define AH_NEW 0x08
#define XF_ENC 0x10
#define XF_AUTH 0x20
#define XF_SUP 0x80 /* Mark the transforms as supported */
typedef struct {
int photuris_id;
int kernel_id, flags;
} transform;
/*
* Translation from Photuris Attributes to Kernel Transforms.
* For the actual ids see: draft-simpson-photuris-*.txt and
* draft-simpson-photuris-schemes-*.txt
*/
transform xf[] = {
{ 5, SADB_X_AALG_MD5, XF_AUTH|AH_OLD},
{ 6, SADB_X_AALG_SHA1, XF_AUTH|AH_OLD},
{ 5, SADB_AALG_MD5HMAC, XF_AUTH|AH_NEW|ESP_NEW},
{ 6, SADB_AALG_SHA1HMAC, XF_AUTH|AH_NEW|ESP_NEW},
{ 7, SADB_AALG_RIPEMD160HMAC, XF_AUTH|AH_NEW|ESP_NEW},
{ 8, SADB_EALG_DESCBC, XF_ENC|ESP_OLD},
{ 18, SADB_EALG_3DESCBC, XF_ENC|ESP_NEW},
{ 16, SADB_X_EALG_BLF, XF_ENC|ESP_NEW},
{ 17, SADB_X_EALG_CAST, XF_ENC|ESP_NEW},
{ 19, SADB_X_EALG_SKIPJACK, XF_ENC|ESP_NEW},
};
transform *kernel_get_transform(int id);
void kernel_transform_seen(int id, int type);
int kernel_register(int sd);
int kernel_xf_set(int sd, char *buf, int blen, struct iovec *io, int cnt,
int len);
int kernel_xf_read(int sd, char *buf, int blen, int seq);
int kernel_ah(attrib_t *ob, struct spiob *SPI, u_int8_t *secrets, int hmac);
int kernel_esp(attrib_t *ob, attrib_t *ob2, struct spiob *SPI,
u_int8_t *secrets);
int kernel_group_spi(char *address, u_int8_t *spi);
int kernel_bind_spis(struct spiob *spi1, struct spiob *spi2);
int kernel_delete_spi(char *address, u_int32_t spi, int proto);
struct sadb_msg;
int kernel_request_sa(struct sadb_msg *);
int kernel_handle_expire(struct sadb_msg *);
int kernel_new_exchange(char *, int);
#else
#define EXTERN extern
#endif
EXTERN int kernel_known_transform(int id);
EXTERN int kernel_valid(attrib_t *enc, attrib_t *auth);
EXTERN int kernel_valid_auth(attrib_t *auth, u_int8_t *flag, u_int16_t size);
EXTERN u_int32_t kernel_reserve_spi(char *srcaddress, char *dstaddress,
int options);
EXTERN u_int32_t kernel_reserve_single_spi(char *srcaddress, char *dstaddress,
u_int32_t spi, int proto);
EXTERN int kernel_insert_spi(struct stateob *st, struct spiob *SPI);
EXTERN int kernel_unlink_spi(struct spiob *ospi);
EXTERN int init_kernel(void);
EXTERN int kernel_get_socket(void);
EXTERN void kernel_set_socket_policy(int sd);
EXTERN void kernel_handle_notify(int sd);
EXTERN void kernel_notify_result(struct stateob *, struct spiob *, int);
EXTERN void kernel_handle_queue(void);
#endif /* _KERNEL_H */
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